WASHINGTON (CNN) - Sen. Arlen Specter continues to feel the love from the White House, with Vice President Joe Biden penning a campaign e-mail Thursday for the Republican-turned-Democrat.

"Over the years, we've certainly had our disagreements," Biden writes in the note that was sent to 500,000 Pennsylvanians on the Democratic National Committee/Organizing for America e-mail list. "During that time, however, Arlen has been my friend, my confidant, and my partner in enacting many pieces of significant legislation."

The e-mail includes hyperlinks that direct people to a page dedicated to Specter on the DNC Web site.

President Obama and national Democrats pledged to support Specter in his 2010 re-election run after he switched his party affiliation from Republican to Democrat last month. For now, Specter does not have a primary opponent, but Democratic Rep. Joe Sestak has not ruled out a bid for the party's Senate nomination.

The Specter Web site is the only candidate presence on the DNC Web site, a spokesman told CNN.

"It provides a place for folks who want to learn more about Senator Specter's record of integrity and service, and when they visit we are sure they will see why the President and Vice President see Senator Specter as a key ally in helping to advance an agenda for change on major issues including reforming America's health care system," DNC spokesman Hari Sevugan told CNN.

Another one of the three bullet points highlighted by the DNC is "Judiciary Confirmations: Senator Specter has played an important role in nine different Supreme Court nominations since 1981."

What the DNC doesn't mention is that Specter voted for Clarence Thomas and Samuel Alito to join the U.S. Supreme Court, and for then-Justice William Rehnquist to be chief justice. None of the men were exactly Democrats' most beloved justices on the Court.

Full text of Biden's e-mail after the jump

Three weeks ago, my friend Senator Arlen Specter added one more feat to his long and impressive career - he became a Democrat.

Over the years, we've certainly had our disagreements. During that time, however, Arlen has been my friend, my confidant, and my partner in enacting many pieces of significant legislation.

For more than 25 years, we've ridden the train together back to Wilmington and Philadelphia. We've had some great debates and discussions on the train - and gotten to know each other so well - that it gives me great pleasure to be able to work even more closely with Arlen now.

His independence, integrity, and piercing intellect will continue to be a tremendous asset to the people of Pennsylvania, and now, to the Democratic caucus in the Senate.

I know that he'll keep up his great work on issues ranging from cancer research funding to global warming, deficit control to immigration reform - and in our coming debate to reform America's health care system.

Thousands of you have already written messages of support, welcoming Arlen to the party, and he was tremendously pleased to receive them.

I know that once you come to know him like I do, you'll be just as happy as I am to have him.

Find out more about Senator Specter's career of service for the people of Pennsylvania: